Question Monitor is black.... No signal

[Ogis]

So, at first time.. My keyboard and mouse didnt worked... But i fixed it
. But Now my monitor is just black once i turn on pc... Help..

 

[Lutfij]

When posting a thread of troubleshooting nature, it's customary to include your full system's specs. List them like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:

You might also want to list all the steps you've taken to get the computer running initially.